RIM’s BlackBerry service is offline once again, just hours after the company restored the service earlier on Tuesday.

The service suffered an outage earlier this week, which lasted almost a full day, from 11am BST on Monday until around 9.30am BST on Tuesday. The reasons for the outage were not explained by BlackBerry.

Millions of customers in Europe, the Middle East and Africa were left without access to the internet or its BBM instant messaging tool, and according to reports and commentary on Twitter, the same has happened again today.

“Some users in Europe, the Middle East and Africa, India, Brazil, Chile, and Argentina are experiencing messaging and browsing delays,” RIM confirmed in a statement. “We are working to restore normal service as quickly as possible.  We apologise for any inconvenience this has caused.”

RIM’s Twitter account is again being inundated with responses by customers demanding compensation or they would take their business elsewhere.

The outages come at a time when RIM is facing financial difficulty and uncertainty over its future. The company’s Q2 profits slide to less than half of the previous quarter while revenue for the quarter was also down 15 per cent to just $4.2bn from $4.9bn generated in the previous quarter.

The recent poor performance of the firm led to Jaguar Financial, a RIM shareholder, calling for a major overhaul that may include the sale of the firm.